If you're looking for a unified communication system that spans multiple programming languages and that's always up, Vonage is a good option. It's got a broad suite of voice, messaging, video and data services. With video conferencing, virtual receptionist, call recording and integration with popular CRMs, Vonage is geared for businesses around the world. The service has a 99.999% uptime guarantee and is used by more than 100,000 businesses.
Another contender is SignalWire, an all-in-one communications service. It offers a variety of APIs for voice, messaging and video designed to let developers build communication apps that scale and are reliable. SignalWire's programmable unified communications, elastic cloud networks and real-time communication APIs are designed to be reliable and low latency. It integrates with Dialogflow and Zapier, and offers a lot of developer tools, so it's good for companies large and small.
If you want AI built into your communications, check out Crexendo. It's a UCaaS-CCaaS hybrid that offers omnichannel communications. It includes features like ChatGPT-powered customer service, video conferencing and HD Voice. Crexendo also has a 100% uptime guarantee and integrates with more than 400 leading SaaS applications, so it's good for companies of any size.
Last, Voximplant is a powerful CPaaS for real-time voice, video and messaging communications. Its scalable foundation and features like serverless tools, AI integration and a unified API make it good for cloud-based call center operations and communications built into other apps. It supports multiple programming languages and has a high-capacity global network for high uptime.